hildee



Sheet 1.

4 Sheets (No ModeL) G. F. HILDER 8a E. SCOTT.

MAGNETIC SEP ARATOR.

No. 315,028. Patented Apr. '7, 1885.

N. PEIERS. Phulo-mm n hgr. washinmm n. c.

(No ModeL) 4 T 0 flu S H & R E D L I H R O MAGNETIC SEPARATOR.

No. 815,028. Patented Apr. 7, 1885.

r N PETER$ PhotmLnhognpher. Washl 'gtoll. u.c.

(No Modem 4 SheetsSheet 3.

G. F. HILDER & E. SCOTT.

MAGNETIC SEPARATOR.

No. 315,028. Patented Apr. 7, 1885.

Messed.-

N. PETERS. Phom-ulhe n hnr, Wah'mglan. \XC.

' L) 4Sheets-Sheet 4.

O. F. HILDER & E. SCOTT.

MAGNETIC SEPARATOR.

Patented Apr. 7,1885.

n. PEYERS Pholo-Likhognphu. Washmglcn. 11c,

UNITED STATES PATENT OFFICE.

CHARLES FREDERICK HILDER AND ERNEST SCOTT, OF NEVVGASTLE-UPON- TYNE,ENGLAND.

MAGNETIC SEPAR'ATOR.

ET-JPECIPICATION forming part of Letters Patent No. 315,028, dated April7,1885.

Application filed November 26, li-84.

(No modem Patented in England July 19, 1884, No. 10,371.

To all whom it may concern:

Be it known that we, CHARLES FREDERICK HILDER, journalist, and ERNESTScoTT, engineer and brass founder, subjects of the Queen of GreatBritain, and both residents of N ewcastle-uponTyne, England, haveinvented an Improved Magnetic Separator, (for which we have obtained apatent in Great Britain, No. 10,871, hearing date July 19, 1884,) ofwhich the following is a specification.

This invention relates to machines for separating particles of iron orsteel from other 2 5 carrying disk which turns above said belts,

and circuit making and breaking devices,

whereby the magnets of said disk are succesively magnetized as they passover said feedbelt and demagnetized as they pass over said 0delivery-belt, substantially as set forth.

Our said invention is chiefly designed to afl'ord the means forrecovering from the sweepings or refuse of workshops or factoriesportions of comparatively valuable metals or 3 5 alloyssuch as copper orbrasswhich in such refuse are mixed with iron or steel filings orthelike. It is, however, applicable for separating particles of iron orsteel from sand or other substances mechanically combined there- 40with. For example, it can be very advantageously applied for extractingor separating the particles of iron from magnetic ore or fromtitaniferous sand, such as the Taranaki iron sand found in New Zealand;or it may be em- 5 ployed for separating iron oressuch as Staffordshirered ores-which can be attracted by magnets from other materials, theores being previously crushed or ground.

For the purpose of our invention we make use of the principle ofelectromagnetismthat is to say, the workshopsweepings, ore, sand, orother substances to be treated are brought into the vicinity of anelectro-magnet or series of electro-magnets whose coils are connectedwith any suitable generator of electricity through the medium of contactmaking and breaking devices. Contact being made, the said electro magnetor magnets will attract the particles. of iron or steel, and'thuseliminate or separate the same from the mass and hold them whilecarrying them away or until a suitable carrier comes into position toreceivetheln. The contact being then broken, the electro-magnets releasethe particles of iron or steel and permit them to fall into a suitablereceptacle or upon the said carrier. When workshop-sweepings are treatedto re-. cover the valuable materials which they contain, thesesweepings,after the iron or steel has been eliminated therefrom, aresubjected to washing or other treatment to extract the said valuablematerials.

In the accompanying drawings, we have illustrated a machine or apparatusconstructed in accordance with our invention. Figure 1 is a plan,Fig. 2a side elevation, and Fig. 3 an end elevation, of the said machine.Figs. 4 and 5 represent detail views of the circuit making and breakingdevices and some of the proximate parts of the machine.

Like lettersindicate the same parts in these figures.

a is the frame of the machine, which is made of wood or other suitablematerial. bis a circular plate or disk provided with a series ofelectro-magnets, c, and arranged to rotate in a horizontal plane abovetwo endless traveling belts or aprons, d e. These belts are placed uponrollers ff, carried in bearings g. They are arranged parallel to eachother and in such 0 position relatively to the disk 22 that some of theelectro-magnets on the said disk are over the belt d, while others areover the belt e. h

is a hopper which is arranged above the belt (1 near the roller f, andthrough which the 5 refuse sweepings or other substances to be. treatedare fed upon the said belt. The disk b may be rotated in any suitablemanner. In the apparatus shown in the drawings we employ for thispurpose a pulley, i, fixed on the xle of the roller f, and a belt, j,passed around the said pulley and also around a pulley, k, fixed on thevertical shaft Z, carrying the disk b. A crank-handle, m, is also shownfixed on the axle of the roller f, so that the movement of the belts d eand the rotation of the disk b can be effected simultaneously by hand.We may, however, provide a pulley on the said shaft, instead of thecrank-handle, and arrange for driving the machine by steam or otherpower. a n are pulleys for guiding the belt j.

The contact making and breaking device which we prefer to employ is mostclearly shown in Figs. 4 and 5.

p is a tube of insulating material fixed on the shaft Z. d

p' is a ring or collar, and 19 19 are segments carried by the said tubeof insulating material. The said ring and segments are made of brass orother good conducting material. The ring p is connected by a wire, q,with a metal ring,

19 which is also fixed on the shaft Z, but is insulated therefrom. Oneend of eaclrof the circuits in which the magnets are included isconnected with this ring 12 The other ends of these circuits areconnected each with a separate segment, 19 by means of a wire, which ispassed through an aperture or hole in the insulating-tube p. p is abrush bearing upon the ring 19, and connected by the wire g with onepole of a battery.

p p p p are brushes, each of which bears upon a separate segment, 19*,and all of which are connected by the wire ([3 with the other pole ofthe said battery. Each of the aforesaid circuits is therefore completedwhile the corresponding segment, 19 remains in contact with one of thebrushes p 10 p 12 and is broken when not in contact with either of thesaid brushes.

The operation of this apparatus is as fol lows, that is to say: Thematerials are fed upon the belt (1 in a thin layer. As this layer iscarried by the belt under the disk b the circuit in which theelectro-magnets 0 above the said belt are included is closed and themagnets are energized or magnetized by the electric current. Thesemagnets, therefore, attract the particles of iron or steel or othermaterial capable of being thus attracted, and separate them from thebrass, copper, silica, gangue, or other materials constituting theremainder of the said layer, and hold the said particles until, by therotation of the disk on its axis, such particles are carried over thebelt 0. The contact making and breaking device then opens the circuit inwhich the electromagnets carrying the said particles are included, sothat the said magnets are demagnetized, and the particles of iron orsteel are released and allowed to fall upon the belt 6. From this beltthey fall into the receptacle r. During the working of the machine thecircuits are repeatedly closed and opened or made and broken, as abovedescribed, so that the operations of picking up the particles of iron orsteel from one belt and dropping them upon the other are carried oncontinuously. The copper, brass, or other substances which have beenleft on the belt'or carrier at are carried forward thereby and falltherefrom directly into a receptacle, 8; or they are carried by the saidbelt to another endless belt or apron, which deposits them in a washingapparatus or elsewhere, to be washed or otherwise treated, as desired.We usually arrange the disk I; so that the magnets,when'attracting theiron or steel, will move in the same direction as the belt d, asindicated by the arrows in Fig. 1, and so that the magnets, midwaybetween the center and circumference of the disk, will move at the samespeed asthe belt, and will therefore for a short time be stationaryrelatively to the said belt. The attraction of all the particles of ironor steel is thus insured. We prefer that the opening and closing of thecircuit should be efi'ected by automatic contact devices. WVe prefer,moreover, that the magnets should be arranged in, say, six or eightseries, each occupying a segment of the disk b, and that the saidcontact devices should be so adjusted that before one of these segmentsis moved over the belt d the circuit will be closed and the magnets inthe said segment energized or magnetized by the current, and as soon asthe said segment is moved over the belt 6 the circuit .will be openedand the said magnets demagnetized. The said contact devices may, ifdesired, be actuated by other means than those above de scribed,properly arranged in connection with the said disk to co-operatetherewith for the' purpose specified.

What we claim is- 1. In combination with a feed-belt and adischarge-belt traveling side by side, a series of magnets which rotateover said belts, and devices which free the particles of iron from saidmagnets as thelatter pass above said discharge-belt, as set forth.

2. In combination with a feed-belt and a discharge-belt arranged inproximity to one another, a series of electro-magnets rotating abovesaid belts, and circuit closing and breaking devices whereby saidmagnets are caused to pick up the particles of iron as they pass abovethe feed-belt and to drop the said particles as they pass over thedischarge belt, substantially as set forth.

3. The combination of the disk I), carrying the magnets c, with contactmaking and breakin g devices, andthe belts d e, which are movedsimultaneously with the rotation of said disk, substantially as setforth.

CHARLES FREDERICK HILDER. ERNEST sc orr.

